Cooking-stove



- S. & G. J. CONRAD.

Cooking. Stove No. 4.871. Patented Dec. 3. 1846.

recess to the lower recess (T) stove. In changing the shifting bottom (F) UNITED STATES PATENT OFFICE.

SAML. CONRAD AND GEO. J. CONRAD, OF BERLIN, PENNSYLVANIA.

COOKING-STOVE.

Specification of Letters Patent No. 4,871, dated December 3, 1846.

To all whom it may concern:

Be it known that we, SAMUEL CONRAD and GEORGE J. CONRAD, of Berlin, in the county of Somerset and State of Pennsylvania, have invented a new and Improved Cooking- Stove; and we do hereby declare that the following is a full and exact description.

The nature of our invention consists in the arrangement of a cooking stove for the use of wood or coal as fuel, simply by removing the shifting bottom' (F) from the mfiddlle 0 t e in said manner, the stove is also changed from a wood stove to a coal stove, and in using our spherical dampers (G) the two flues (o and may be opened or shut alternately by one motion, so as to circulate the fire around the baking oven (U) or to conduct the same direct under the kettle at p, p and into the chimney (X) (Figure 3).

To enable others skilled in the art to make anduse our lnvention, we will proceed to. describe its construction and operation, reference being had to the annexed drawing; making a part of this specification.

The same letters are used on the same parts of the stove in all figures.

Fig. 1, is a perspective view of the stove when used for wood, the shifting bottom (F) being in the upper recess (h). (H H,) two folding doors in the upper part of the stove. (K) the back-fire-plate, visible through the kettle hole, and also (G, G) the spherical dampers, represented as to shut the descending flue (v) and ascending flue (10) (see Fig. 3,) the fire passing direct from the fire place (K) under the kettles and into the chimney (X), as represented by the arrows (p, p, 19, etc.), and dotted lines. (A) shown by dotted lines the king post, and (Y) the fire dividing plate between the kettles. (N) the cover of the shifting bottom (F).(N the same cover. (F) the shifting bottom by itself, (cover removed,) (D) the side flange, and (L) an opening in the said flange to admit the key (E) to drop in, (when in the lower recess (T) Fig. l),and to fit the key (C) when the shifting bottom (F) is placed in the upper recess (h) for the use of burning wood. (G G) the two spherical dampers by themselves (G") represents the' said flues o and w shut (Fig. 3) and the fire passing direct over the flue and (G) showing the flues thrown open, the fire circulating around the baking oven '(U) Fig. 3. (A) the king-post supportingand dividing the two dampers (G G)and supporting the upper plate (S) of the stove. (T) the lower recess covered by a sheet iron plate.

Fig. 2, the same stove arranged for burnmoved from the upper recess to the lower recess (T)and in its place the upright fire plate (I) is inserted in the recess (it).-tl16 plate (I) having many holes to let air into the fireplace tosupport combustionsaid recess may be closed by two other folding doors (H H) for the purpose to regulate the draft of air if reing coal, the shifting bottom (F) being rep quiredthe dampers (G G) are here supposed to be elevated and the flues opened for the circulation of the fire around the baking oven (U) as traced by the dotted lines and arrows (e, z) are two small knobs, for

the purpose of arresting and to keep the dampers up, when elevated.

Fig. 3, representing the coal-stove in a longitudinal section. the fire grate. (I) the upright fire plate.

keys (6 e), and locks (g, g). (G) painted red, represents the spherical damper elevated, and kept fastened in that positionby the knob (z) the arrows (a, n, &c.), showing (J) side plates. (K) the fire cook-plates with flanges (72),

the fines through which the fire has to passv around the baking oven in such a case. (G) painted yellow, showlng the spherical damper when depressed and shut up the flues (v and and only the single flue (p, p) is opened for the direct passage'of the fire from the fire place (J) to under the kettle and into the chimney as shown by the arrows and dotted lines (70, p, p, &c). The parts (I, M. J, and K,) are withdrawn and shown single by themselves for betterillustration.

To explain the particular combination and connections of the single parts of said stove it will be necessary to make the following repetition in describing them. For the use to burn coal in said stove, the front has four folding doors (H, Fig. 2), the two lower ones covering the upper recess (72.) a grate (I) in front standing upright; another grate (M) lying horizontally upon bearings (05) two outside plates (J) for securing the outer plates of the stove from the action of the fire (when coal is used) the plate (K) is in two parts. The one has an upright flange (b) on the back of the plate, which serves for two purposes-it forms a defense against the pressing back of the plate when hot, as it rests against the oven; it also forms the back locks (e) for keeping up the other part (K). In front are three bearings (f f f) for shifting bottom (F) to rest between and two locks (e e) on the same piece with the flange. The other back piece (K) has two small openings (9 g) for the locks (e e) to pass through, so that in placing them in the one (K) with the lock (6' e.) is put first in its place, and then the other (K) is placed in and raised until the locks (e 6) pass through the openings (g g) and let drop; the object of having it in two pieces is for the purpose of placing or removing it without taking the stove apart.

It has been mentioned before the shifting bottom (F) is used in the upper recess (h) to burn wood, and when shifted below at (T) for coal when the grates and (I) and the side plates (J, Fig. 3) remain as before stated, the lock or recess in the flange (D) is dropped over a stationary key (E) of the extreme bottom (13) which secures it to its place and another lock (f) on the back plates. (K K) which keeps it down to its place, as represented at Fig. 3. For burning wood the doors H H and grates (I and M) are taken out, the shifting bottom (F) is introduced in the upper recess (h) the lower cross bar i, Fig. 2) of the stove in front serves as a bearing under the bottom (F, Fig. 1) and two keys (0 0) are placed, one in each side and drop in locks (L L) of the bottom at (D D), which finishes the entire fireplace for wood, in which case the side door 7:) is used (see Fig. 1).

The kingpost (A) is so constructed as to serve for several purposes. First, it secures the oven together in front by a rod (Z) or I screw running down from the post through the oven and with abar beneath screws it firmly together; secondly, it is the bearing for the dampers (G); thirdly, it has a notch (0) behind to receive the top flue plate so as to regulate it with the dampers and prevent it from coming in contact with both the dampers; fourthly, it serves as a bearing to the top plate (S) to rest on so that when the top becomes hot it cannot sink, which is the case in many stoves of a similar kind.

(G" G)The dampers have been also described above, but in addition it may be remarked that they rest with a bearing in the center of the king-post (A) at the other extremity is a handle or lever (g) on the outside of the stove for the purpose of turning them open, or to shut, when they are opened for the purpose for baking or driving the fire around the oven, no heat is lost for boiling service on the back part of the stove, which we believe no other stove now in use performs the same saving operation. The dampers (G G) are placed in front and just above the front oven plate, so that when closing the fine (;0 p) and passing around with the damper it drops on the back fire-' plate and forming a complete flue (n n n 620., see Fig. 3). The damper also forms the regulation of heat on the oven for if the oven becomes too hot the one damper may be let down and cause a less heat to pass around the oven.

What we claim as our joint invention and desire to secure by Letters Patent, is-

1. Ne claim the combined mode of locking the back-plate (K) as described and represented in the drawings, Fig. 3.

2. We claim the arrangement of the dampers G G in combination with the flues (p).

and (n) as set forth in the specification and illustrated by the drawings.

SAMUEL CONRAD. GEORGE J. CONRAD. Witnesses CHARLES AToHEsoN, JOHN BARNES. 

